Sheet-delivery mechanism.



PATENTED JUNE 7, 19041 A. B. GRAHAM. SHEET DELIVERY MECHANISM.

6 SHEETS-SHEET 1.

N0 MODEL.

APPLIOATION FILED JUNE 11. 1900.

umulllllllllli Mz /zecycyea 'N0. 761,669. PATENTED JUNE 7, 1904.

, A. B. GRAHAM.

SHEET DELIVERY MECHANISM.

APPLIGATION TILED JUNE 11. 1900. N0 MODEL. 6 SHBETS--SHEET 2.

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v I LL b 5% \j; *3 f 3 w w w I I i 1 N kfi PATENTED JUNE 7, 1904.

' A. B. GRAHAM.

SHEET DELIVERY MECHANISM.

no MODEL. APPLIUATIOK FILED JUNE 11. 1900. v 6 BHEETS-SHEET a.

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1, No. 761,669. Y PATENTED JUNBV, 1904.

A., B. GRAHAM. SHEET. DELIVERY MECHANISM.

a I APPLICATION PI ED 1 11. 1900. N0 IODBL. L U1 6 SHEETS-BEBE! 4..

V me/afo Jami 24M fl w Ja "nai A. B. GRAHAM.

SHEET DELIVERY MECHANISM;

APPLIUATIOI FILED JUI I E 11. 1900.

PATBNTED JUNE 7, 1904.

110 MODEL.

6 SHEETS-$111315.

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No. 761,669. 7 PATENTED JUNE 7, 1904.;

A; B. GRAHAM.

SHEET DELIVERY MECHANISM.

APPLICATION FILED JUNE 11. 1900. H0 MODEL. 6 SHEETS-SHEET 6.

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Patented June 7, 1904.

- UNITEDSTATES PATENT OFFICE.

ALFARO B. GRAHAM, OF CHICAGO, ILLINOIS, .ASSIGNOR TO THE GRAHAM PRESSFEEDING COMPANY, A CORPORATION OF ILLINOIS.

SHEET-DELIVERY MECHANISM.

SPECIFICATION forming part of Letters Patent No. 761,669, dated June '7,1904. Application filed June 11, 1900. -Serial Noi 19,806; (No model.)

To alt whom it may concern.-

Be it known that I, ALVARO B. GRAHAM, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Sheet-Delivery Mechanism, ofwhich the following is'a specification.

The object of the invention is to provide mechanism for delivering orfeeding paper from a pile or stack to a printing-press, folding-machine,or other appliance; and the invention consists in the features anddetails of construction and the combination of parts hereinafterdescribed and claimed.

In the drawings, Figure 1' is a top or plan view of the sheet-deliveringmechanism of the present invention. Fig. 2 is a rear elevation of thesame. Fig. 3 is a side elevation of. the same, Figs. 2 and 3 having theframe broken away; Fig. 4:, a detail, partly in section, showing one ofthe forward presserfeet and its operating devices; Fig. 5, a detail,partly in section, of the presser-foot and its operating device shown inFig. 4; Fig. 6, a detail, partly in section, showing a modification inthe operating devicesfor the front presser -feet; Fig. 7, a detailshowing a presser-foot having its cushion or pad in the form of a tubeor cot. encircling the foot; Fig. 8, a detail, partly in section, beinga side elevation of the feed-disk and its friction feeding pawl or dog;Fig. 9, a detail, partly in section, being a top or plan view of theparts shown in Fig. 8; Fig. 10, a top or plan view of one of the sidepresser or corner-raising feet for the sheet at the rear corners; Fig.11, a detail, being a side elevation of the parts shown in Fig. 10; Fig.12, a detail, partly in section, of the parts shown in Fig. 10;Fig. 13,a detail, also partly-in section, of some of the parts shown in Fig. 10;Fig. 14k, a detail, being a top or plan view of a modified form of thecarrier or support for the side presser or corner-sheet-raising feet;Fig. 15, a detail, being a top or plan view of another modification ofthe carrier or support for the side presser or corner-sheetraising feet.

The machine has a framework A of any suitable construction, on which tomount the delivery mechanism proper and in which to locate asheeteraising platform or table B, on which is placed the pile of sheetsto be operated upon and delivered by the sheet-delivery mechanism. A tthe front or delivery end of the machine are located the front ordelivery presser-feet O. Each foot O is formed with a plate or base withupwardly-projecting ears 0, and the plate or base is provided with acushion or pad 0, of rubber or other suitable material that will claspor hug the sheet closely, so as to insure the forward movement of thefoot, carrying with it the clasped or caught sheet. The cushion or pad 0in the construction shown in Fig. 7 is in the shape of a tube or cot tofit over the foot, so that as the bearingface becomes worn and will notact effectively the tube or cot can be turned to bring a new portionthereof in position to act as the cushion or pad. As shown in the otherfigures of the drawings, the cushion or pad is flat and secured to thebottom of the foot. Each presser-foot is pivotally mounted at the forward end of a leg or support O, having at its rear end a knee or head 0for pivotally connecting it so that it is free to adjust itself on itsown pivot to suit the lay or conformation of the pile of paper and so asto be raised and lowered on the pivot of the knee or head I with thereceding and advancing movements given thereto.

A shaft D extends across the frame from side to side and has looselymounted thereon sleeves or sockets D, each sleeve or socket being heldagainst end movement by collars (Z, abutting against the ends of thesleeve or socket, and each locked to the shaft by. a setscrew orotherwise. As shown in Fig. 6, each socket D has a depending ear orprojection d,

to which is pivoted the knee or head 0 by a suitable pin or pivot topermit the leg or support O to be raised and lowered at its front end toraise and lower the presser foot. Each sleeve or socket D has a lug orstop d which, with the movement of the socket, contacts a lug or stop 0on the knee or head O when the on the return movement.

ear or arm (Z is moved backward, such contact operating to raise thepresser-foot, while with the forward movement of the ear or arm thecontact between the lugs or stops is broken, permitting the foot to dropand act on the first or top sheet of paper.

Each end of the shaft 1) enters a socket of a slide E, the body 0' ofwhichis mounted on a rod E, supported in standards or uprights c from abase or plate E adjustably secured to the top rail a of the frame bysuitable clamping-bolts or otherwise. A friction or bearing plate E issupported on the tops of the standards or uprights e and held in placeby means of tightening screws or bolts 6 and between the head of eachscrew or bolt and the face of the plate is a pressure-spring (2,permitting an adjustment by means of which the plate can be made to bearor press against the top orupper face of the body of the slide E andcreate a friction between the slide and the rod on which it is mounted.This friction between the slide and its red operates to momentarilyresist the return movement of the slide, thereby insuring a quickraising of the presser-feet by the reciprocating rods through which thefeet are actuated and also preventing the feet from droppingwhen raisedand Each front or delivery foot is moved through the medium of areciprocating rod or pitman F, operated from a rock-shaft. Asshown inFigs. 1, 2, and 6, the forward end of each reciprocating rod or pitmanhas secured thereto a fork F, having arms f, which receive between themthe ear or arm (Z of the sleeve or hub D, for the fork, the ear, and theleg of the presser-foot to be united by the same pivot 10* on which theleg of the presser-foot is pivotally mounted. The pressure on the footwhen down is secured by a flat spring f, as shown in Figs. 2 and 6,through the end of which a rod on the head of the leg or standardpasses, the rod and spring being adjustable in their relation to eachother to regulate the pressure, for which purpose both rod and springhave a downward curvature, and the rod is movable endwise to givedifferent points of bearing on the spring, so that the action of thespring will be to press down on the rod and force andhold the foot .inengagement with the paper sulficiently strong to have the advance of thefoot carry with it the sheet of paper. The downward pressure ismaintained during the forward movement of the reciprocating rod orpitman,

which gives a corresponding movement to the foot, and on the return orbackward movement of the pitman the sleeve or hub is turned to contactthe lugs or stops 0 and (Z and raise the foot, as already described,against the force of the spring.

As shown in Figs. 3, L, and 5, each reciprocating rod or pitman F hassecured to its front end a head or block F and the sleeve or hub D hasupwardly-projecting ears 612, be-

tween which the head or block is pivoted by a suitable pin or pivot f.Thehead or block has at each end on the bottom a depending lug orprojection f", which form stops to limit the independent swing of thesleeve or hub. As shown, the sleeve or hub between the cars is cut awayon the top and bottom to leave a flat face; but, if desired, the sleeveor hub could have an entire round periphery. The foot is raised with therearward movement of the rod or pitman, which causes the sleeve or hubto contact the lugs or steps (5 and (Z and lift the foot, and, as shownin Figs. 1, 3, 4, and 5, the pressure to hold the foot in engagementwhen advancing is furnished by a weight (Z on a rod (1, carried by theknee or head of the leg or standard. The rod may be adjustably securedin the knee or head or be fixed therein. The weight is to be adjustabl ymounted on the rod so as to change its location as required to producethe proper amount of pressure or force for the foot to engage and slideor move the sheet of paper forward. The paper adjacent to eachpresser-fmt is held straight and smooth by a loop extending around eachfoot and carried by a collar C, loosely mounted on the feed-shaft andheld against endwise movement on the shaft by collars c" at each end'ofthe socket or sleeve and aset-screw c for each collar. The loop is ofsufiicient dimensions to bear on the paper adjacent to the presser-footand is of a length sufiicient to permit the forward and backwardmovement of the foot and its leg or support without coming in contactwith the loop. The pressure for keeping the loop on the paper may besupplied by a loose weight C placed on the top of the side bars of theloop, as shown by the dotted lines in Figs. 1 and 2 and the full linesin Figs. 1- and (3, the weight being changed as may be required for thenecessary force to hold the sheet smooth around the foot.

The rock-shaft G for reciprocating the rods or pitmen F is mounted insuitable journal boxes or bearings on the side pieces of the frame atthe rear of the machin 1 aml carries a corresponding number of arms orlevers (-l' to the number of the rods or pitmen, each pitman or rodbeing pivotally attached to its arm or lever. Each arm or lever is on asocket or sleeve G which can be locked to the rock-shaft by a set-screwor otherwise. The rock-shaft at one end has an arm or crank G3 with awrist-pin 1 having connected therewith a pitman or red g, connected witha wrist-pin 7 on a sprocket or other driving wheel G, mounted on ajournal pin or spindle g on the side piece of the frame, so that therotation of the driving-wheel operates the pitman or red and rocks theshaft G to reciprocate the rods or pitmcn F to rock the sleeves or hubsand move all the presserfeet simultaneously.

A presser or corner-shcct-raising foot II is located on each side of themachine near the rear end of the platform or table. Each foot has on itsunder face a cushion or pad 0, the same as the front presser-feet, andhas ears h on its upper face, between which is pivoted a leg or supportH, pivoted to the arm H of a vertical L-lever by a suitable pin or pivoth, and, as shown, the foot or leg is forked to straddle the end of thearm H and the arm is provided witha projecting pin h,which forms a stopfor engaging the'fork of the leg or support to raise the leg or supportand limit its descent. The L-lever is pivotally mounted on a pin orpivot it between ears 7&3 on a slide I and has a stop [L5 to limit theupward movement of its arm H and the presser-foot. The slide 1 ismounted on rods 1 so as to be free to move back and forth by eyes a,encircling the rods, which are secured in .uprights or standards 71 on aplate J and an inward extension J of such plate. A flat bearing-spring 1is secured to one of the uprights or standards and extends across one ofthe ears of the slide and has suflicient force or pressure to bear orpress on the slide and create a friction between the slide and its rodson which it is mounted for the friction to operate and resist themovements of the slide and hold the foot fromdropping when raised on thereturn movement from the action of its pressureweight. The plate J ismounted on a' baseplate J 2 and is clamped to such'plate by bolts 1' andis adjustable forward and back thereon by means of a slot j' in thebase-plate, through which slot the clamping-bolts pass, each clamping-bolt having a head j entering a groove or recess 1' on the underface of the base-plate,

so asto permit the adjustment of the carrying-plate and the locking ofsuch plate in its adjusted position by means of the clamping- The arm Hof the vertical L-lever is connected by a rod is with the arm K of ahorizontal L-lever mounted on a post or standard K by a pin or pivot7c,so as to permit of the swinging oroscillatin g of the L-lever in ahori- Zontal plane. The other arm, K, of the hori- -zontal L-lever isconnected with a sleeve or hub K (shown in fullness in'Fig. 1,) fixed tothe outer reciprocating rod or pitman F by a set-screw and the sleeve orhub has a projecting ear In, slotted to receive a pin or stud 70 on theend of the lever-arm K, so thatwith the forward and backward movement ofthe rod or pitman the horizontal L- lever will be swung on its pin orpivot and, through the connecting-rod it, move the vertical L-leverhaving the arm H and H for that lever to actuate the leg or support ofthe presser-foot and raise and lower the foot. The pressure or force forholding the foot in engagementor contact with the paper is furnished bya sliding weight if, adjustable on a rod 7L", extending out from the legor support,

so that the weight can be moved on the rod as required for the pressureneeded, and when properly adjusted the weight is locked to the rod by aset-screw or otherwise.

The slide or socket K is forusc with paper of the greatest width andwould not be adapted for use with paper of narrower Width, as thepresser-foot would operate outside of the edge of the sheet. The sidepresser or corner-lifting feet can be brought into position to 0p' erateon narrow sheets of paper of different widths by swinging the base-plateJ inward and adjusting the carrying-plate J thereonthrough theclamping-bolt and slot, with the carrying-plate at right angles to thebase-plate and parallel with the side rails or pieces of the frame, asshown by the'dotted line in Fig. 1. This change in the location of thebase-platenecessitates a change for the attachment of the operatingparts of the foot to the sliderod, requiring a connection with aninterme-' diate slide rod. Such connection is had through the supportfurnished by the slides or sockets K and connecting-bar K connecting-barK has an elongated car 70 terminating in a slot 'to receive the stud orpin is on the arm K of the horizontal lever-for medium-width paper, andone of the sockets or sleeves K has an ear is with a slot to 'receivethe pin 79* on the arm K of the horizontal lever, so that by theconnection of the horizontal lever with either of the cars 70 or it themovement of the support will operate the horizontal and verticalL-levers to raise and lower the foot, as already described.

The corner of the sheet should be'frce at the initial inward movement ofthe presserfoot, so as to enable the foot to raise and free the rear endof the top' sheet at each corner, and at the same time after the corneris clear of the pile of sheets or has been raised the corners of thepile of sheets must be held so as to prevent the advance of the forwardpresser-feeit from carrying more than the one sheet which has beenraised at the corners forward for delivering.

The inward extension or neck J of the plate J has mounted thereonavertical L-lever piV- oted to an upward support L by a suitable pin orpivot l. One arm, L,of this lever ter Ininates in an end Z, and theother arm, L, carries a lateral pin Z and a vertical pin Z", and justabove the pivot of the lever is a lateral pin The I Z which forms a stopagainst a too-far rea turn or backward throw of the lever by engagingthe edge of the upright or support L A dog or latch M is pivoted to anear m on I the slide I, and its'forward end has an undercut forming anotch or recess m to engage with the upper end Z of the vertical arm Lof the lever, and its upper face has an incline'm rearward of itsforward end. A second dog or latch N is pivoted to a bar 0, mounted onan ear or standardiO, by apin or pivot 0,'so that the'bar O is free torise and fall -'at its forward end. Thelatch'N is mounted by ears a anda pin or pivot n? and is free to rise and fall independent of the bar.The forward end of the dog or latch is undercut to have a recess ornotch a to engage with the end Z of the upright arm L of the lever whensuch arm L is in its advanced or forward position. The dog or latch Nhas a lateral projecting pin a to be engaged by the incline m of the dogor latch M, with the continued advance of the dog or latch M, so as toraise the forward end of the dog or latch N from engagement with thevertical arm L and permit the L-lever to be returned or carried back.The upper end Z of the upright arm L is wide enough for engagement bythe forward ends of both the levers M and N. The engagement of theforward end of the dog or latch M with the arm Lswings the L-leverforward, causing the pin Z on the arm L to raise the bar Oat its forwardor free end, and such movement will continue until the under face of thedog or latch M is contacted by the upper end of the pin Z", so as toraise the dog or latch M and disengage the end thereof from the arm L,at which time the upper end of the arm L has passed to a point where thedog or latch N can drop behind the end I of the arm L and hold the leveragainsta return movement with the forward end of the bar() in itselevated or raised position. The bar will be held at its forward end ina raised position until the farther advance of the dog or latch M causesthe incline m to contact the pin 01 and raise the dog or latch N fromengagement with the arm L, leaving the L-lever free to swing back andpermit the forward end of the bar 0 to drop or descend.

A bar 0 is provided for each of the side presser or-corner-sheet-raising feet. Each bar has connected therewith a weight P,secured bya bolt 12 to an arm orbar P, attached to the forward end ofthe arm 0 by means of a slot 1) in the bar P and a clamping-bolt p onthe bar 0, the slot and clamping-bolt permitting of an adjustment asrequired to properly locate the weight in relation to the rear cornersof the pile of paper. It is necessary that the sheets at the rearcorners should be loose at the initial forward movement of the sidepresser-feet in order to permit said feet to raise and release the rearcorners of the sheet for the withdrawal of the top sheet; but duringsuch withdrawal the pile of sheets must be held or retained in order toprevent the moving or delivering of more than the top sheet. Thisretaining of the rear corners of all of the sheets except the top one issecured by the dropweights P, which are temporarily raised with theinitial advance of the side presser-feet by the raising .of the forwardend of the bar Ofrom the initial advance of the slide I through the dogor latch M and the lever having the arms L and L, as already described.Each weight will be held in its raised position during the advance ofthe side presser-feet and until the dog or latch M has advanced sul'licien tl y far for the incline thereon to lift each dog or latch N,releasing the arms L, so that the weights will drop, carrying with themthe bars 0 for the weights to rest on the pile of sheets at the rearcorners and hold the sheets against being drawn forward with the forwardmovement of the front or delivery feet and during the return movement ofthe side presser or corner-sheetlifting feet, so that during the entiremovement all the sheets except the upper one are held against forwardmovement during the action of the front or delivery presser-feet.

The rear end of the pile of sheets is held down at the center during theoperation of feeding the sheets forward at all times by a roller Q,carried by a journal pin or stud r] on an arm Q, extending out from asocket or sleeve Qj, loosely mounted on the rock-shaft Qand held againstendwise movement on the shaft by collars q and set-screws 1 The pressurefor holding the sheets against up- Ward lift and forward movement isfurnished by a weight 0", adjustable on a rod projecting out from thearm or support Q. The weight can be adjusted forward or back on the rodso as to give the required pressure on the sheets to hold them and atthe same time allow the withdrawal of the upper sheet without affectingthe remaining sheets, such withdrawal being permitted by the rollerrevolving on its journal pin or stud with the forward movement of thetop'sheet.

The feed-shaft Ris mounted in suitable supports or standards 0' on eachside of the ma.- chine, and on this shaft is loosely mounted theretaining-loops C, as already described. The upper end of each shaft hasa miter-gear R, which meshes with a miter-gear S on a vertical shaft S,each shaft S being stepped or supported in a bracket .v or othersuitable support on a bar (1 of the frame A. Each vertical shaft isscrew-tlu'eaded on its exterior and passes through a serew-thremled nutor socket s on the platform or feed-board P), so that with the rotationof the shafts in one direction the feed-board will be gradually raised,while with the rotation of the shafts in the opposite direction theplatform or fecd-board will be lowered. The feed-board when lowered canbe supplied with the required amount of paper sheets, which sheets areto be delivered one by one from the top by the operation of thesheet-delivery devices already described. lt is necessary in order tohave a proper delivery of each top sheet that the platform or feed-boardbe raised gradually and to the extent only commensurate with thedelivery of a sheet, and for this purpose the feed-shaft R should begiven a partial revolution suflieient to rotate the vertical shafts toraise the platform or feed -tahle, and such raising should occur as eachsheet is delivered. The rotation of the feed-shaft should therefore bein unison with the advance movement of the front or deliverypresser-feet. This movement is had by the following devices:

A rod or pitman T is pivoted at its rear end to an arm or lever on thesocket or sleeve A of. avrod or pitman F and at its forward end ispivoted between the ears t on a sliding block or head T, which moves ona graduated arm or lever U, carrying an engaging pawl a permanent withthe arm or lever. The arm or lever U is pivotally connected with an armor bar U by a suitable pin or pivot 10, and

the arm or bar U extends out from a socket or sleeve U loosely mountedon the feedshaft R and held against end movement in one direction by acollar a locked to the shaft by a set-screw a. A friction-disk V islocated on the shaft 1% adjacent to the socket or sleeve U to be in linewith the'engaging end of the pawl a and is provided with a center or,hub 41, fastened to the shaft by a set-screw 1;, so that with theforward rotation of the friction-disk the feed-shaft will be forwardlyrotated. The degreevof' rotation of the feedshaft should be one to raisethe platform or feed-table the thickness of a sheet of paper, and inorder to secure this result the arm or lever of the friction-pawlisprovided with a graduated scale by means of which the slide or clasp Tcan be adjusted up or down, as required; for the throw of the pawl tooperate the friction-disk, and when adjusted the slide or clasp can belocked in its adjusted position by a set-screw t or otherwise. Thelocation of the slide or clasp near the pivot produces a greatermovement of the arm or lever and a corresponding greater movement of thefriction -pawl, giving a greater rotation to the friction-disk. Afarther outward adjustment of the slide on the arm or lever givesasmaller swing and a smaller movement of the frictionpawl, producing aless rotation of the friction-disk. It will thus be seen that with theadjustment of the slide or clasp inward or toward the pivot-point of thelever the frictiondisk will rotate the shaft for a thick sheet and theoutward ad justment of theslide or clasp gives the pawl amovement topartially rotate the shaft for thinner sheets of paper. This arrangementenables a feed to be hadto suit the thickness of the sheet of paper, andinstead ofhaving the slide and scale on the pawl arm or lever they couldbe on a suitable arm or lever on the rock-shaft. I

,In Fig. 14-5 modified construction for moving the side presser orcorner-sheet-raising feet is shown. The lower plate J 2' has a sideextension or arm J 3 and is pivoted at f to the top 'rail a of the sideof the frame. A link J is pivoted to the end of the arm or extension Jand at its other end is connected by a pin or'pivotj with the base-plateJ. The lower plate J has a longitudinal slot in which plays a pin f onan arm J which pin passes through the base-plate J. The other end of thelink, J is pivoted by a pin or pivot ,7' to a fixed arm or bracket J,extending inward from the top rail of the frame. The turning of thelower plate on its pivot causes the arm or extension J 3 to move thelink J and such movement of thelink carries the base-plate J inward,andin such inward movement the baseplate J is carried in planes parallelwith the side of the frame by the action of the links J t and J throughwhich it is supported and carried. The base-plate can be carried to anyintermediate or middle position or to its farface a channel in which islocated a sliding block J to which is attached by a bolt j the baseplate J, the stem of the bolt passing through a slot in the body of theplate J. The loosening of the bolt 7" permits the sliding block to bemoved inwardly in its channel on the plate J so that the base-plate vJcan be adjusted to any intermediate or to its farthest inward position,and when the adjustment is reached the tightening of the clamping-bolt j:securely holds the base-plate in its adjusted position. The connectionof the operating parts of the side presser-feet is made with the plate Jin its adjusted positions for Fig. 15 the same as'with the adjustedpositions of Fig. 1. The mechanism is to be located in proper, relationto a printing-press, a folder, or any intermediate or other form ofreceiving or delivery appliance, so as to operate anddeliver a pile ofpaper, sheet by sheet, to the press, folder, ordelivery appliance. Theparts are so timed that when the rear corner-retaining weights areraised the side presser or corner-sheet-raising feet move inward to liftthe corners of the sheet, at which time the'front or deliverypresser-feet are in their elevated position and on their returnmovement. As the sheet corners are carried inward .the weights are intheir raised position and so remain until the finish of the movement toraise the corners, when they drop onto the pile of sheets and hold themagainst the forward movement of the front or delivery presserfeet to'slip or move the top sheet bodily forward, which movement of the frontor delivery presser-feet begins with the termination of the inwardmovement of the side presser or corner-raising feet. It will thus beseen that the rear ends of the pile of sheets are held against movementof any sheet except the top one, that the top sheet is left free and,clear'to be carried forward with the forward movement of the front ordelivery feet, and that the movements of the feet alternate, one setbeing in operation when the other set is non=operative.

The friction-feed enables the platform or feed-board to be accuratelyraised proportionately to the thickness of a sheet, as the slide whichoperates the friction pawl or lever can be adjusted up or down thereonto suit the requirements of the thickness of a sheet and have theforward movement of the frictiondisk rotate the feed-shaft to the degreerequired for raising the table or platform the distance of the thicknessof one sheet with the delivery of each sheet. The friction-feed producedby the operation of an arm or lever and a pawl integral therewith orfixed rigid or permanent thereon operating in conjunction with a feeddisk or face can be successfully utilized wherever it is requisite ornecessary to have a positive graduated feed of the same degree at eachoperation.

The weighted loops around the front or delivery presser-feet operate tohold the sheet against crinkling or draw in the operation of the feet,and by turning the intermediate feet rearwardly, as shown in Fig. 1, thesheet will be maintained in a straight-line travel, as any advance fromthe operation of a corner-foot that would tend to turn the sheet isovercome by the pressure or action of the intermediate feet. Thefriction produced by the bearingbars E and by the bearing-springs I isto be adjusted in each case so as to produce the slight resistancerequired for the operation of the feet at the terminus of movement ineither direction and to hold the feet when raised against dropping fromthe action of the pressure springs or weights. The presserfoot ispreferably pivotally attached to its leg or support; but a foot formedwith the leg or support or rigidly secured thereto can be used, ifdesired, the foot in either case to have a reciprocating movement and tobe raised clear of the sheets on the return movement and to be engagedwith the top sheet on the advance or forward movement to deliver thesheet.

I claim 1. In a sheet-delivery mechanism, presserfeet'at the deliveryend of the mechanism, a leg or support for each foot having the foot atits forward end, a rocking sleeve or hub for each leg or support havingthe leg or support pivoted thereto, contacts between the head or knee ofeach leg or support and its rocking sleeve or hub for raising the legand permitting it to fall, and actuating means operating to rock thesleeves or hubs and through the sleeves or hubs raise and lower the legsor supports and the presser-feet, substantially as described.

2. In a sheet-delivery mechanism, presserfeet at the delivery end of themechanism, a

leg or support for each foot having the feet at its forward end, arocking sleeve or hub for each leg or support having the leg or supportpivoted thereto, contacts between the head or knee of each leg orsupport and its rocking sleeve or hub for raising the leg, pressuremeans for forcing the leg or support down and holding the presser-footin engagement with the paper and actuating means operating to rock thesleeves or hubs and through the sleeves or hubs raise and lower the legsor supports and the presser-feet, substantially as described.

3. In a sheet-delivery mechanism, presserfeet at the delivery end of themechanism, a leg or support for each foot having the foot at its forwardend, a rocking sleeve or hub for each leg or support having the leg orsupport pivoted thereto, contacts between the head or knee of each legor support and a rocking sleeve or hub for raising the leg, a rodcarried by each leg or support, a presser-spring acting on each rod toforce the leg of the foot down and hold the foot in engagement with thepaper, and actuating means operating to rock the sleeves or hubs andthrough the sleeves or hubs raise the legs or supports and thepresser-feet, substantially as described.

4:. In a sheet-delivery mechanism, presserfeet at'the delivery end ofthe mechanism, a leg or support for each foot having the foot at itsforward end, a rocking sleeve or hub for each leg or support having aleg or support pivoted thereto, contacts between the head or knee foreach leg or support and its rocking sleeve or hub for raising the leg,an adjustable weight carried by each leg for forcing the leg down andholding the foot in engagement with the paper, and actuating meansoperating to rock the sleeves or hubs and through the sleeves or hubsraise the legs or supports and the presser feet, substantially asdescribed.

5. In a sheet delivery mechanism, side presser-feet at the rear end ofthe mechanism, a leg or support for each foot having the feet at itsinner end, a verticaloscillating or rocking L-lever for each leg orsupport having the leg or support pivoted to one arm thereof, contactbetween the leg or support and the arm of the L-lever for raising theleg or support and permitting it to fall, and actuating means operatingto rock or oscillate the L'levers and raise and lower the legs orsupports and the presser feet, substantially as described.

6. In a sheet-delivery mechanism, presserfeet at the rear end of themechanism, a leg or support for each foot having the foot at its forwardend, a vertical oscillatingor rocking L-lever for each leg or supporthaving the leg or support pivoted to one arm thereof, a slide carryingthe vertical oscillating or rocking L-lever, and means for reciprocatingthe leg or support for each foot having the foot at its forward end, arocking sleeve or hub for each leg or support having the leg or supportpivoted thereto, contacts between the head or knee on each leg orsupport and a rocking sleeve or hub for raising the leg, sidepresser-feet at the rear end of the mechanism, a leg or support for eachside presser-foot having the'foot at its inner end, a verticaloscillating or rocking L -lever for each leg or support having the legor support pivoted to one arm-thereof, a contact between the arm of theL-lever and its leg orsupport for raising the leg or support, andseparate means actuated from, a common motive power for operating thesleeves or hubs and for operating the vertical oscillating or rocking L-levers to have the rocking movement of each commence on the cessation ofthe rocking movement of the other and giving the feet reciprocatingmovements by the continued action in the same direction of the actuatingmeans, substantiallyas described.

8. 1n a sheet delivery mechanism, side presser-feet at the rear end ofthe mechanism,

a leg or support for each foot having the foot,

at its inner end, a vertical oscillating or rocking L-lever for each legor support having the leg or support pivoted thereto, a contact betweenthe leg or support and the arm of its vertical oscillating or rockingL-lever for raising the leg-or support, aslide having the verticaloscillating or rocking L-leverpivotally mounted thereon, a horizontaloscillating or rocking lever connected with the other arm of thevertical lever, to oscillate or rock the vertical levers and raise thefeet on the return movement and to advance the feet when lowered intooperating position, and means for oscillating the rocking or horizontallevers, substantially as described.

9. In a sheet-delivery mechanism, the combination of side presser-feetat the rear end of the mechanism, a leg or support for each foot havingthe foot at its inner end, a ver'-. tical oscillating or rocking L-leverfor each leg or support having the leg or support pivoted to an armthereof, a contact between the leg or support and its arm of thevertical oscillating or rocking L-lever, aslide on which the verticalL-lever is pivotally mounted, a horizontal oscillating or rockingL-lever connected with'the other arm of the vertical L- lever tooscillate or rock the vertical lever and raise the feet on the returnmovement, and to advance the feet when lowered into operating position,a reciprocating support or sleeve having one arm of the horizontal L-lever connected therewith, and means for reciprocating the supports orsleeves to cause the horizontal 'L-levers to operate the verticalL-leversand raise the presser-feet, substantially as described. 1

10. In a sheet-delivery mechanism, the combination of aretaining-weight, one on each side at the rear end of the mechanism, aswing.

ing bar for each weight pivotally mounted at its rear end, a verticalL-lever for each bar. having one of its arms engaging with the swingingbar, a reciprocating dog or latch pivotally mounted at its rear end andhaving its front end to engage with the upperend of the vertical arm oftheL-lever, for the forward movement of the bar to raise the horizontalarm of the lever and lift the swinging bar and raise the weight,substantially as described,

11. In asheet-delivery mechanism, the combination of retaining-weights,one on each side at the rear end of the mechanism, a swinging barcarrying a weight and pivotally mounted at its rear end, an L-leverhaving a vertical arm and a horizontal arm for the horizontal arm toengage the swinging bar, a reciprocating dog or latch pivotally mountedto have its rear end engage the upper end ofthe vertical arm of theL-lever, for the advance of the'dog or latch to raise the horizontal armof the L-lever and liftthe swinging bar and weight, and a second dog orlatch pivotally 5 swinging bar lifted and the retaining-weight raised,substantially as described. 12. In a sheet-delivery mechanism, the com-,

bination of a side presser-foot at the rear end of the mechanism, a legor support for the foot having the foot at its forward end, averticaloscillating or rocking L-lever having the leg'or support pivoted to onearm thereof, a

contact between the leg or support and the arm of the vertical L-leverto which it is pivoted for raising the leg or support, a horizontaloscillating or rocking L-lever, a connection between thevertical L-leverand the horizontal L-lever, means for actuating the horizontal L-lever,a slide on which the vertical L-lever is pivoted, abase for the slide, avertical :Llever pivotally mounted on the! base, a-pivoted reciprocatingdog or latch to engage the vertical arm of the L-lever of the base androck such lever, a second dog or latch to engage the pivoted L-leve'r ofthe base turn of the presser-foot, substantially as described.

'13. In a sheet-delivery mechanism, a presserfoot at the forward end ofthe mechanism, a leg or support having the foot at its forward end, arocking sleeve or hub having the leg or support pivoted thereto,contacts between the head or knee of the leg or support and its rockingsleeve or hub, a fork pivotally connected with the rocking sleeve or huband means for reciprocating the fork to rock the sleeve or hub and raisethe leg or support, substantially as described.

14:. In a sheet-delivery mechanism, apresserfoot at the delivery end ofthe mechanism, a leg or support having the foot at its forward end, arocking sleeve or hub having the leg or support pivoted thereto,contacts between the head or knee of the leg or support and its rockingsleeve or hub, a head or block pivotally connected with the rockingsleeve orhub, and a reciprocating pitman or red for oscillating the heador block to rock the hub or sleeve and raise the leg or support,substantially as described.

15. In a sheet-delivery mechanism,a presserfoot at the delivery end ofthe mechanism, a leg or support having the foot at its forward end, arocking sleeve or hub having the leg or support pivoted thereto,contacts between the head or knee of the leg or support and its rockingsleeve or hub, a head or block pivotally connected with the rockingsleeve or hub, a reciprocating rod or pitman carrying the head or blockfor the oscillation of the head or block to raise the leg or support,and an adjustable Weight carried by the leg or support for returning thepresser-foot to engage the sheet of paper, substantially as described.

16. In a sheet-delivery mechanism, presserfeet at the forward end of themechanism, a leg or support for each foot having the feet at its forwardend, a rocking sleeve or hub for each leg or support having the leg orsupport pivoted thereto, contacts between the head or knee of each legor support and its rocking sleeve or hub, a fixed shaft on which therocking sleeves or hubs are loosely mounted, a slide at each end of thefixed shaft and a bearing-plate for each slide engaging the face of theslide under pressure to create a friction for the slide in operating thepresserfeet, substantially as described.

17. In asheet-delivery mechanism, the combination of side presser-feetat the rear end of the mechanism, a leg or support for each foot havingthe foot at its inner end, a vertical oscillating or rocking L-lever foreach leg or support having the leg or support pivoted to one armthereof, a contact between the leg or support and the arm of the L-leverfor raising the leg or support, a slide carrying the verticaloscillating or rocking L-lever, and a pressure-spring engaging the slideand creating friction therefor in operating each of the feet,substantially as described.

18. In asheet-deliverymechanism,apresserfoot, an oscillating supporthavi ng the presserfoot pivoted thereto, a slide carrying theoscillating support, and a pressure-plate engaging the slide andcreating friction in operating the foot, substantially as described.

19. In a sheet-delivery mechanism,a presserfoot, an oscillating supportcarrying the presser-foot, a slide carrying the oscillating support, anda pressure-spring engaging the slide and creating a friction therefor inoperating the presser-foot, substantially as described.

20. In a sheet-delivery mechanism,a presserfoot for engaging and movinga sheet of paper, and a cot or tube surrounding the foot and forming acushion or pad to insure the action of the foot'on the sheet of paper,substantially as described.

21. In a sheet-delivery mechanism, the combination of a swingingsupport, a retainingweight adjustably carried by the support and meansfor raising the support to have the weight clear the pile of paper,substantially as described.

22. In a sheet-delivery mechanism, presserfeet at the delivery end ofthe mechanism, a leg or support for each foot having the feet at itsforward end, a rocking sleeve or hub for each leg or support having theleg or support pivoted thereto, a loosely-mounted loop surrounding eachfoot and resting on the paper around the foot, and actuating meansoperating to rock the sleeves or hubs and through the sleeves or hubsraise, lower and move the legs or supports and the presserfeet withinthe space of the surroumling loops, substantially as described.

23. In a sheet-delivery mechanism, a rollerweight at the rear end of themechanism centrally thereof transversely, to rest on the rear side of apile of paper, a swinging support carrying the roller-weight foremtbling the weight to rest on the paper and hold the pile of sheetsagainst movement with the withdrawal of the upper sheet and withoutinterfering with the withdrawal of the upper sheet, substantially asdescribed.

24. In a sheet-delivery mechanism, a rollerweight at the rear end of themechanism centrally thereof transversely, a pi voted or swingingarmcarrying the roller-weight, and an adjustable weight carried by thepivoted or swinging arm, for enabling the roller-weight to bear on apile of paper and hold the sheets in place with the withdrawal of theupper sheet and without interfering with such withdrawal, substantiallyas described.

25. In ashcet-dcliverymechanism, the combination of side presser-feet atthe rear end of the mechanism, means for operating the feet to raise therear corners of the sheets, and an adjustable support for each foot forenabling the position of the feet to be changed,

as required for operation with different sizes of sheets, substantiallyas described.

26. Inasheet-deliverymechanism, the combination'of side presser-feet atthe rear end of the'mechanism, means for operating each sidepresser-foot to raise its rear cornerof a sheet, a reciprocating slidefor each foot and on which the foot is mounted, and a base-plate foreach reciprocating slide each base-plate adjustable inwardly forcarrying the presser= foot on each side inwardly to operate on sheets ofdifferent sizes, substantially as described.

27. In asheet-delivery mechanism, the combination of side presser-feet,means for operating the side presser-feet for each foot to raise itscorner of the sheet, a reciprocating slide for each foot, a base-platehaving the reciprocating slide mounted thereon, a swingingplate carryingthe base-plate and means for adjusting the-base-plate on the swingingplate when swung inward to suit the requirements of sheets of differentsizes, substantially as foot to sizes of different sheets, substantiallyas described.

29. In a sheet-delivery mechanism, the combination of a platform orfeed-table carrying .the paper, a feed-shaft journaled-in stationarybearings for operating the platform or feedtable, a friction-disk fixedon the feed-shaft, a movable friction-pawl swung from the shaft andoperated to partially rotate the feed-shaft as required to raise theplatfor'mor feed-table the distance of the thickness of a sheet ofpaper, substantially as described.

30. In a sheet-delivery mechanism the combination of a platform orfeed-table carrying the paper, a feed-shaft journaled in stationarybearings for operating the platform or feedtable, a friction-disk fixedon the feed-shaft, a movable friction-pawl swung from the shaft andengaging the disk, an arm or lever having the friction-pawl fixedthereon and a scale to gage the throw of the arm or lever to have thepawl operate and partially rotate the feedshaft as required to raise theplatform or feedtable the distance of the thickness of a sheet of paper,substantially as described.

31. In asheet-delivery mechai'iism, the combination of a platform orfeed-table carrying the paper, a feed-shaft journaled in stationarybearings for operating the platform or feedtable, a friction-disk fixedon the feed-shaft,

a movable friction-pawlswimg from the shaft and engaging the disk, anarm or lever having the friction-pawl fixed thereon and a graduatedscale on the arm or lever for regulating the throw of the arm or leverto have the pawl operate and partially rotate the feed-shaft as requiredto raise the platform or feed-table the distance of the thickness of asheet of paper, substantially as described.

32. In a sheet-delivery mechanism, the combination of aplatform orfeedtable carrying the paper, a feed-shaft journaled in stationarybearings for operating the platform or feedtable, a friction-disk fixedon the feed-shaft,

a movable friction-pawl swung from the'shaft and engaging the disk, anarm or lever having swung from a fixed point and engaging thefriction-face of the shaft and operating to advance the shaft asrequired for apartial rotation thereof, substantially as described.

34. The combination of a fixed friction-disk, i

lever having thejmwlfixed thereon, a slide on the arm or lever and meansfor actuating the arm or lever through the slide to engage and disengagethe friction disk and pawl, for the engagement to advance thefriction-disk, substantially as described- 35. The combination ofa fixedfriction-disk, a movable arm or lever and a friction-pawl in one swungfrom a fixed point, and means for actuating the arm or lever to causethe engagement and disengagement of the friction disk and pawl,substantially as described.

36. An arm and pawl having an angular relation one to the other andformed of a single integralpiece, a pivot on which the arm and pawl areadapted to be pivotally mounted to swing from a fixed point, and a diskor wheel intermittently advanced from the engagement therewith of thepawl, substantially as described. r

37. The combination of a friction-disk, a friction-pawl, an oscillatingarm, the pawl and the arm formed in a single piece and having angularrelation one to the other, a pivot at the junction of the pawl and arm,and a re* ciprocating rod connected directly with the arm, for givingthe arm its oscillatory movement, substantially as described.

'38. The combination of afriction-disk, a friction-pawl, an arm having aforward and backward movement given thereto, the pawl and the arm formedin a single piece, a pivot for the arm, and means for moving the leverin both directions and have the movement in one direction operate andcause the pawl to act as a stop for the forward motion of the peripheryof the disk, substantially as described.

89. The combination with afrietion-disk, of a movable lever, a fulcrumfor the lever at a fixed distance from the periphery of the disk orpawl, and means acting directly on and moving the lever in bothdirections for the stroke of the lever in one direction to advance theperiphery of the disk and for the reverse stroke of the lever to benon-operative on the disk, substantially as described.

40. In asheet-delivery mechanism, the combination of a platform orfeed-table carrying the paper, screw-threaded shafts one at each end ofthe platform or feed-table for operating the same, a feed-shaftjournaled in stationary bearings for operating the screwthreaded shafts,a friction-disk fixed on the feed-shaft, and alever-having its fulcrumadjusted for the acting end of the lever to operate directly on theperiphery of the frictiondisk and partially rotate the feed-shaft asrequired to raise the platform or feed-table the distance of thethickness of a sheet of paper, substantially as described.

41. In asheet-delivery lllQOllillllSll'], the combination of a platformor feed-table carrying the paper, screw-threaded shafts one at each endof the platform or feed-table for operating the same, a feedshaftjournaled in stationary bearings for operating the screw threadedshafts, a friction-disk fixed on the ALVARO B. GRAHAM.

Witnesses:

THoMAs A. BANNING, THoMAs B. Blobinnoon.

